[r1concepts]

R1 Forged Series Big Brake Kit!

"Maximizing brake performance to the highest level!

R1 Forged Series Big Brake Kit is made for those seeking maximum performance in braking. R1 Forged Series Brake Rotors are manufactured with High Carbon (more Carbon, Chromium, and Molybdenum), the R1 Forged Series Brake Rotors offers increased braking performance and strength. A center split core castinf provides greater stability. Black Electro Coating protects against rust while extended rotor life. Mill balancing and double disc grinding reduces thickness variations for smoother stopping, minimal vibration and improved break-in.

*AVAILABLE IN DRILLED ONLY, SLOTTED ONLY, OR DRILLED & SLOTTED


Calipers

• Forged Aluminum 6061 T6
• Available in 4 piston, 6 piston, and 8 piston
• Available in paint or anodized in a variety of colors (both with clearcoat)

Rotor Hat

• Aluminum 6061 T6
• Black Hard Anodized (Standard)
• Available in a variety of anodized colors
• 2 Piece (Standard)
• Floating (Upgrade)

Rotors Sizes

• 330mm (12.99") FRONT/REAR
• 345mm (13.58") FRONT
• 356mm (14.02") FRONT/REAR
• 380mm (14.96") FRONT/REAR
• 405mm (15.94") FRONT

Pistons

• Aluminum (Standard)
• Stainless Steel (Upgrade)
• Knockback Springs available (Upgrade)

*IF YOU HAVE ANY QUESTIONS OR ARE INTERESTED IN PURCHASING, PLEASE PM OR EMAIL KEVIN@R1CONCEPTS.COM*

[vasillalov]

What are the piston sizes for a front kit for 335i assuming 356mm rotor?

[Dr. G]

Originally Posted by vasillalov

What are the piston sizes for a front kit for 335i assuming 356mm rotor?

My guess is: 38, 36, 30

Let's see if I'm close.

[r1concepts]

Originally Posted by vasillalov

What are the piston sizes for a front kit for 335i assuming 356mm rotor?

Depending on the wheel size, the front rotors can start at 330mm and go as high as 405mm.

-330mm come in either 4 or 6 piston
-345mm in 6 piston only
-356mm come in 6 or 8 piston
-380mm and higher only come in 8 piston

Piston size for a 356mm rotor is: 32.36,38.

[Cloud9blue]

Originally Posted by r1concepts

Depending on the wheel size, the front rotors can start at 330mm and go as high as 405mm.

-330mm come in either 4 or 6 piston
-345mm in 6 piston only
-356mm come in 6 or 8 piston
-380mm and higher only come in 8 piston

he said piston size, not rotor...

but seriously, aluminum piston??? aluminum is like the probably the worst material for a brake piston due to rapid heat transfer from the pads and straight to your brake fluid... at the very least it should be stainless steel as standard. hell, many bbk calipers are starting to use titanium and ceramic pistons for this very reason.

also, sup with the piston arrangement on the caliper shown in your picture? looks like an 8 pot design to me, but why are the two smaller pistons located in the middle? smaller pistons are typically located at the end of the caliper's rotating direction, to reduce the applied pad pressure at those region in order to eliminate any tapered pad wear that might encounter at higher temperature. make no sense to have the smaller pistons in the middle though... looks like whoever designed this is just trying to squeeze in as many piston as he/she can just for the bragging rights...

but anyway, guess the profit margins for BBK are so high these days, everyone is trying to jump into the band wagon.

[r1concepts]

Originally Posted by Cloud9blue

he said piston size, not rotor...

but seriously, aluminum piston??? aluminum is like the probably the worst material for a brake piston due to rapid heat transfer from the pads and straight to your brake fluid... at the very least it should be stainless steel as standard. hell, many bbk calipers are starting to use titanium and ceramic pistons for this very reason.

also, sup with the piston arrangement on the caliper shown in your picture? looks like an 8 pot design to me, but why are the two smaller pistons located in the middle? smaller pistons are typically located at the end of the caliper's rotating direction, to reduce the applied pad pressure at those region in order to eliminate any tapered pad wear that might encounter at higher temperature. make no sense to have the smaller pistons in the middle though... looks like whoever designed this is just trying to squeeze in as many piston as he/she can just for the bragging rights...

but anyway, guess the profit margins for BBK are so high these days, everyone is trying to jump into the band wagon.

I edited the post and the piston size is 32, 36, 38 for a 356mm rotor 6 piston. I do understand what you mean about how the outside does look like it has 2 smaller pistons in the middle. As for the pistons, the picture posted is our 8 piston design and what you see is just the design of the piston (looks of caliper). All of our pistons are made for function and tested for perfect braking pressure. The 8 piston caliper from front to back is 36mm, 32mm, 30mm, and 28mm as you see in the picture below.

Attached to this post is the picture of how the inside of the caliper looks like. The reason why we use aluminum is to make it more affordable for the everyday street car. With the aluminum piston and the aluminum caliper when paired up, it is less likely to corrode. When aluminum and steel is paired up, it is more likely to corrode especially in wet saline conditions. However, the customer does have the option to upgrade the pistons to stainless steel at an additional cost and also to knockback springs as well.

[vasillalov]

Originally Posted by Cloud9blue

he said piston size, not rotor...

but seriously, aluminum piston??? aluminum is like the probably the worst material for a brake piston due to rapid heat transfer from the pads and straight to your brake fluid... at the very least it should be stainless steel as standard. hell, many bbk calipers are starting to use titanium and ceramic pistons for this very reason.

also, sup with the piston arrangement on the caliper shown in your picture? looks like an 8 pot design to me, but why are the two smaller pistons located in the middle? smaller pistons are typically located at the end of the caliper's rotating direction, to reduce the applied pad pressure at those region in order to eliminate any tapered pad wear that might encounter at higher temperature. make no sense to have the smaller pistons in the middle though... looks like whoever designed this is just trying to squeeze in as many piston as he/she can just for the bragging rights...

but anyway, guess the profit margins for BBK are so high these days, everyone is trying to jump into the band wagon.

You Sir are spot on with the questions!

Aluminum pistons are lighter, but they do indeed absorb a lot of heat. Stoptech offers piston noses made out of titanium for their ST60, ST40 and Porsche GT3 calipers to reduce heat transfer:




Another reason why one puts different size pistons on a caliper is for better brake modulation. Fluid mechanics dictate that given the same pressure, a smaller piston will travel faster and further than a larger piston BUT with a smaller force. This means, small pistons are great for quick taps on the brakes to scrub of just a little bit of speed. Easy on, easy off.

The big pistons are for when you brake hard. They move slower, but with greater force thus squeezing the pad tighter.

Generally, progressive calipers are designed in such a way that the smaller pistons fire up first before the big ones as the fluid travels in the brake line. So naturally, you'd want them to be grouped together and right next to where the brake line hooks into the caliper, not in the middle.

EDIT:
Even TarOX's top of the line B400-GT16 caliper with ... you guessed it... 16 pistons has the pistons grouped by size.

[vasillalov]

So I did some math here...

R1 concepts 6 piston with 32mm, 36mm and 38mm pistons have total piston area of 212mm per caliper.
Stoptech ST60 for our cars has 30, 30 and 36mm pistons for total piston area of 192mm per caliper
OEM Calipers have a single 59 mm piston, but because the caliper is floating, this makes it 118 mm total area.

I wonder how would the brake balance be affected?

[vasillalov]

Another question: How is it that the calipers say "Forged Series" when it definitely looks like a cast piece?

[Cloud9blue]

Originally Posted by r1concepts

I edited the post and the piston size is 32, 36, 38 for a 356mm rotor 6 piston. I do understand what you mean about how the outside does look like it has 2 smaller pistons in the middle. As for the pistons, the picture posted is our 8 piston design and what you see is just the design of the piston (looks of caliper). All of our pistons are made for function and tested for perfect braking pressure. The 8 piston caliper from front to back is 36mm, 32mm, 30mm, and 28mm as you see in the picture below.

Attached to this post is the picture of how the inside of the caliper looks like. The reason why we use aluminum is to make it more affordable for the everyday street car. With the aluminum piston and the aluminum caliper when paired up, it is less likely to corrode. When aluminum and steel is paired up, it is more likely to corrode especially in wet saline conditions. However, the customer does have the option to upgrade the pistons to stainless steel at an additional cost and also to knockback springs as well.

Ah, that makes more sense, just a funny looking housing I suppose. I can understand machining aluminum is much easier than stainless steel, still with piston seal in the way, there shouldn't be any steel-aluminum contact that will cause corrosion issue.

[The HACK]

Originally Posted by vasillalov

So I did some math here...

R1 concepts 6 piston with 32mm, 36mm and 38mm pistons have total piston area of 212mm per caliper.
Stoptech ST60 for our cars has 30, 30 and 36mm pistons for total piston area of 192mm per caliper
OEM Calipers have a single 59 mm piston, but because the caliper is floating, this makes it 118 mm total area.

I wonder how would the brake balance be affected?

Your calculation is wrong.

OEM piston area = ((59mm/2)^2)*3.14= 2,734mm^2.

STOPTech piston area = (((30mm/2)^2)*3.14) + (((30mm/2)^2)*3.14) + (((36mm/2)^2)*3.14) = 2,432mm^2.

R1 Concept piston area = (((32mm/2)^2)*3.14) + (((36mm/2)^2)*3.14) + (((38mm/2)^2)*3.14) = 2,956mm^2.

(By the way you only calculate per pushing side, not both, so you do NOT multiply by 2 for fixed calipers)

Draw your own conclusions. Based on the above calculations, the STOPTech calipers would make the brake pedal stiffer, while shifting 10% of brake bias toward the rear. R1 Concept kit would make the pedal softer, while shifting brake bias further front.

[vasillalov]

Duuh. I totally zonked out on the math. You are correct. I was doing math with radius not area.

[r1concepts]

Originally Posted by vasillalov

Another question: How is it that the calipers say "Forged Series" when it definitely looks like a cast piece?

All of our BBK calipers are from forged aluminum. Then it is CNC to precision specs. For our anodized calipers, we first sand blast them before anodizing them. Therefore, the texture you see there are from sandblasting, not casting. Which is also also a unique look that we offer with our anodized calipers.

[r1concepts]

Feel free to PM me if you guys have any questions.

[vwetish]

oh...I will not engage in this discussion!

[JRV-F82-M4]

Originally Posted by r1concepts

All of our BBK calipers are from forged aluminum. Then it is CNC to precision specs. For our anodized calipers, we first sand blast them before anodizing them. Therefore, the texture you see there are from sandblasting, not casting. Which is also also a unique look that we offer with our anodized calipers.

Any Pics of the anodized calipers and hats? The Red and Blue ones preferredly.
Thanks

[wshgrntd]

I honestly hate having to inbox someone for a price... why not just post the prices!?

[JRV-F82-M4]

Any reviews on these?

I am really interested in these, they seem to fit my needs... Ie, a less expensive alternative to Stoptechs. However, I first need to see pics of the anodized calipers in red and blue (r1concepts website needs updated to show pics of all their products), and also research what the industry has to say about these new BBKs before I place my order.

By my calculations, I estimate an $800 savings compared to StopTechs.

[r1concepts]

Originally Posted by wshgrntd

I honestly hate having to inbox someone for a price... why not just post the prices!?

We don't have set prices listed because pricing can change anytime since we just released this BBK about a few months ago during SEMA. Also there are different options to choose within this kit such as going with the 4, 6, or 8 piston as well as upgrading from a fixed 2 piece to a floating 2 piece. I'll go ahead and send you over an PM.

[r1concepts]

Originally Posted by JRV335is

Any reviews on these?

I am really interested in these, they seem to fit my needs... Ie, a less expensive alternative to Stoptechs. However, I first need to see pics of the anodized calipers in red and blue (r1concepts website needs updated to show pics of all their products), and also research what the industry has to say about these new BBKs before I place my order.

By my calculations, I estimate an $800 savings compared to StopTechs.

No review on these just yet from other members on here since it's still fairly new. We do have other customers who have this kit and love the way it looks and performs. Some are for show and track use.

We did sponsor a Formula Drift driver by the name of Ryan Kado and had our R1 Forged Series BBK on his 350Z. He did give us a review and the kit worked out great for him on the track! However, he was eliminated from the competition early.

Here's a quick video of the kit on his 350Z:

[JRV-F82-M4]

Originally Posted by r1concepts

No review on these just yet from other members on here since it's still fairly new. We do have other customers who have this kit and love the way it looks and performs. Some are for show and track use.

We did sponsor a Formula Drift driver by the name of Ryan Kado and had our R1 Forged Series BBK on his 350Z. He did give us a review and the kit worked out great for him on the track! However, he was eliminated from the competition early.

Here's a quick video of the kit on his 350Z:

Please don't take this the wrong way, because you and your team have been very responsive to my numerous PM's and I do appreciate it. It's just that, I think your anodized red calipers may be the solution for me but I just need to see them...

This video is great, I saw it this weekend when I was scouring the web and youtube trying to catch a even the slightest glimpse of your anodized calipers...to no avail. All your YouTube marketing videos, SEMA boothes etc., are all really cool videos with lots of hot chicks and sweet rides, but surprisingly none of these videos show your line-up of calipers. There must be some where we can go to see your entire line up? Please advise.

[r1concepts]

Originally Posted by JRV335is

Please don't take this the wrong way, because you and your team have been very responsive to my numerous PM's and I do appreciate it. It's just that, I think your anodized red calipers may be the solution for me but I just need to see them...

This video is great, I saw it this weekend when I was scouring the web and youtube trying to catch a even the slightest glimpse of your anodized calipers...to no avail. All your YouTube marketing videos, SEMA boothes etc., are all really cool videos with lots of hot chicks and sweet rides, but surprisingly none of these videos show your line-up of calipers. There must be some where we can go to see your entire line up? Please advise.

I apologize if we don't have a picture of our red anodized calipers available. Reason being is that we don't stock these kits and they're made to order. We offer these kits in a variety of colors, 15 to be exact. We don't have these listed on my site yet since we're still revamping our site at the moment and working things out so it runs smoothly and then we're planning on listing it when ready.

Keep in mind, we haven't officially launched this R1 Forged Series BBK to the all of our customers worldwide just yet. I was given the opportunity to to post this here on E90 post ahead of time so the forum members have a fist chance at purchasing the kit first. You can say this is a "soft" launch for our BBK.